#head {
    width: 100%;
    height: 100px;

}

#head .head {
    height: 100%;

}

#head .head .logo {
    display: inline-block;
    width: 230px;
    height: 100px;
    line-height: 100px;
    color: blue;

}
#head .head .span{
    display: inline-block;
    width: 100px;
    height: 100px;
    text-align: center;
    line-height: 100px;
    cursor: pointer;
}
#head .head .cur{
    color:blue;
}
#head .head .logo span {
    display: inline-block;
    height: 100px;
    width: 100px;
    line-height: 100px;
    vertical-align: middle;
}

#head .head .logo span img {
    display: inline-block;
    width: 100px;
    height: 100px;

}